How to use aa-missile without crosshair?

[Softegg 0]

if you play with 'crosshair on' and you use an aa-missile, you first lock on the target and then you fire the missile.

but, how to lock on the missile in 'crosshair off'-mode? if i only fire the missile in the direction of the target, the rocket don't follow the plane/chopper.

so what is the clue for hitting a plane/chopper with an aa-missile in 'crosshair off'-mode?

[kegetys 2]

The same way you do with the crosshair enabled. You just wont see the lock triangle, but you still need to lock it using the right mouse button (or where every you have the key assigned) before firing.

[Softegg 0]

but there is no confirmation that i've locked on correctly, right?

[kegetys 2]

right.